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- About romanroma
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Member since
01-26-2019
43
Posts
20
Helpful
1
Solution
02-25-2020
06:33 AM
I am a little confused as to why I am seeing this. I have a 2960x that is showing an ARP entry with an address that is 2 hops away in my network infrastructure, which is not connected to the local subnet. For example: my local switch is 192.168.100.0/24 with an SVI of 192.168.100.1. I have an arp entry for a test box in 172.16.0.0/24; however, the switch is populating an ARP entry for my test box at 172.16.0.50/24 via the default gateway mac. Why is this? Is this a result of an proxy ARP? When I try to ping and populate the local ARP table of my 2960x, to a different test box at 172.16.0.60/24, I cannot populate the table. PING is successful; however, the layer2:Layer3 translation does not populate. I am not sure why this is taking place.
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Created by
romanroma
in Other Network Architecture Subjects
in Other Network Architecture Subjects
02-17-2020
07:01 AM
02-17-2020
07:01 AM
@Joseph W. Doherty I do not believe I have access to Cisco device. This is really a SAS type deployment for this VIOP solution I am trying to troubleshoot. Question - if I wanted to test latency within my own network, how would I do that? Would I use something like you described, to even do local devices within my topology? Thank you RR
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Created by
romanroma
in Other Network Architecture Subjects
in Other Network Architecture Subjects
02-14-2020
11:04 AM
02-14-2020
11:04 AM
I am trying to troubleshoot bad jitter on some VOIP application. I am not really sure where to start on issues like this, but I want to start at the basic before getting into details with Qos. I am using traceroute to see the ms of the return; however, I do not think this is the best way, since some ISP devices might lower the priority of ICMP/UDP used on traceroute. Due to the latter, what is a good way to get a rough idea if I am seeing latency inline to the hosted service?
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02-10-2020
07:23 AM
You might need DHCP snoop turned on. The multicast/broadcast for DHCP discovery might be not getting to the server.
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02-10-2020
07:22 AM
@balaji.bandi I understand now and I appreciate your time. I will dig around on the switches, since a few different engineers deployed the units in a stack configuration. I know from my experience, I had the HTTP gui turned off; however, I was the only one who used the .bin file to upgrade. The other teams used the .tar file for some odd reason. I am not sure why they selected the .tar file; however, it is what is it. Thank you. I am going to mark the thread as solved.
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02-07-2020
01:05 PM
@balaji.bandi Thank you for you answer; however, I am not sure I fully understand. Are you saying that if a particular version and/or track was installed, it would enable the web features? I did turn the feature off; however, I do not believe the junior engineer would even know of this feature. Due to the latter, I want to make sure the http does not get enabled after upgrades. Thank you
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02-07-2020
07:49 AM
I have an engineer that upgrade few switches in the past 8 months. However, I am looking over a switch, and it has 'ip http secure-server' now enabled, and this was not a standard deployment config. In addition, I found out that the .tar file was used, which from my research includes all the web/UI components. Has anyone seen the tar file enable the Web UI after upgrade? c2960x switches 15.2(4).E6
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12-20-2019
01:26 PM
@balaji Thank you for the links. It does make sense; however, do you know if you can just change the 'git' repo with just a directory path of the ansible server? ++laugh++ I know nothing of git.
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12-20-2019
12:55 PM
I am trying to understand the syntax to make a playbook to backup NX-OS devices. I am reading the following link: https://docs.ansible.com/ansible/latest/network/user_guide/platform_nxos.html However, I am not connecting the dots - does anyone have a simple playbook that backups up NX-OS config to a remote Linux server, so I can learn how to use Ansible. I am not looking for a direct copy and paste script, since I want to learn, just need some direction so I can build my Lego blocks onto. Thank you
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Created by
romanroma
in Other Network Architecture Subjects
in Other Network Architecture Subjects
12-12-2019
06:59 AM
12-12-2019
06:59 AM
@joseph Doherty: Ok thank you for those suggestions. Back to ‘Rockk’ question, is there a good client based analyzer tool that you know of? I am running Cacti; however, been looking to Flows to see if I can get detailed reports of end user devices, but It looks like a lot of moving pieces. It might take longer to setup then it is to run and collect the reports for my specific use case.
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Created by
romanroma
in Other Network Architecture Subjects
in Other Network Architecture Subjects
12-11-2019
10:02 AM
12-11-2019
10:02 AM
@joseph Doherty: Would something like Iperf be able to test the max throughput or expected bandwidth? I am facing something similar with a multicast video distribution system. I am not sure if this is a 1:1 comparison; however, it should be close right, or would the unicast vs multicast make it inaccurate?
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Created by
romanroma
in Other Network Architecture Subjects
in Other Network Architecture Subjects
12-11-2019
09:59 AM
12-11-2019
09:59 AM
What is the recommended migration for 2.x Python scripts on chassis? Is 3.x available for upgrade on chassis or is the 2.x locked to the hardware? I have a few scripts that I have no issue with migrating; however, just not sure the right route to take.
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12-10-2019
06:36 AM
@reza, That is a great link thank you. Also - I ended up finding the following book last night at a used book store- "NX-OS and Cisco Nexus Switching: Next-Generation Data Center Architectures 2nd Ed" by Fuller, Jansen, McPherson. Thank you again.
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12-09-2019
06:51 AM
@reza Thank you for the link - I will look through it today; however, I am sure I will have additional questions. Also, I was wondering what the function of the IOS and Kickstart perform. I found this thread; however, is this a good example of the functions of the kickstarter and IOS? Thank you
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12-06-2019
02:41 PM
@Reza Sharifi Understand... thank you. I will double check to see how old I am; however, if it turns out that I am very old in version, and need to upgrade due to security issue... do I have to following the upgrade path in order? Or can I skip big version to the newest? I know sometimes you can do this and sometimes you cannot do this with devices.
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02-17-2020
@Joseph W. DohertyI do not believe I have access to Cisco device. This
is really a SAS type deployme...
02-14-2020
I am trying to troubleshoot bad jitter on some VOIP application. I am
not really sure where to start...
02-10-2020
You might need DHCP snoop turned on. The multicast/broadcast for DHCP
discovery might be not getting...
02-10-2020
@balaji.bandiI understand now and I appreciate your time. I will dig
around on the switches, since a...
02-07-2020
@balaji.bandiThank you for you answer; however, I am not sure I fully
understand. Are you saying tha...
02-07-2020
I have an engineer that upgrade few switches in the past 8 months.
However, I am looking over a swit...
12-20-2019
@balajiThank you for the links. It does make sense; however, do you know
if you can just change the ...
12-20-2019
I am trying to understand the syntax to make a playbook to backup NX-OS
devices. I am reading the fo...
Created by
romanroma
in Data Center Switches
12-13-2019
12-13-2019
I am trying to find a topology model for vPC without FabricPath, or if
it is even possible. I am not...
Created by
romanroma
in Other Network Architecture Subjects
12-12-2019
12-12-2019
@joseph Doherty:Ok thank you for those suggestions. Back to ‘Rockk’
question, is there a good client...
Created by
romanroma
in Other Network Architecture Subjects
12-11-2019
12-11-2019
@joseph Doherty:Would something like Iperf be able to test the max
throughput or expected bandwidth?...
Created by
romanroma
in Other Network Architecture Subjects
12-11-2019
12-11-2019
What is the recommended migration for 2.x Python scripts on chassis? Is
3.x available for upgrade on...
12-10-2019
@reza,That is a great link thank you. Also - I ended up finding the
following book last night at a u...
Public Statistics
| Date Registered | 01-26-2019 05:48 AM |
| Date Last Visited | 03-03-2020 06:47 AM |
| Total Messages Posted | 43 |
| Total Helpful Votes Received | 20 |
